Clutch device



March 15, 1932- E. ACKERMAN ET Ai.

CLUTCH DEVICE Filed March 25, 1928 IN VEN TOR. Edam rd l, Hanf/arman BY a/ J'Zwerzm/ A TTORNE Y.

Patented Mar. 15, 1932 UNITED STATES EDWARD L. ACKERMAN AND ALoIs zr. ZWIERZINA,QEDETROIEMIGEIGAN. SSI'GNQRS or DETROIT, MICHIGAN. ALcoRrORArIoN' el TO ACKERMAN-BLAESSER-FEZZEY, INC.,

0E MICHIGAN f' onuron DEVICE Y Application filed March 23, i928. sensi no. 264,120)

This Vinvention relates to clutch devices and the obj ect of the invention is -to provide a devicev for use in connection lwith a window regulator'so arranged as toallow rotation at any time of the crank'for operating the window regulator butpreventing operation of the window regulator by pressure applied to the Window.

Another object of the invention is .to pro-l vide* a clutch device comprising a coiled spring positioned within a casing and adapted to be contracted by rotation of the crank and adapted to be expanded into binding en-l gagement with the Walljoi"V the casing by pressure applied to thewindow or parts attached thereto,y if L i AA -further object ofthe invention is to prof videla clutch deviceor use with a window regulator in which the window is automatil cally locked' in position at any point to which itisadjusted. M f

These objects and the several novel Vfeatures o1 the'invention :are hereinafter more fully described and claimed and the preferredform of construction by which these objects are attainedv is shown in the accompanying drawings in whichi l Fig. 1 is an elevation of an automobile door with which the clutch device is utilized.

Fig. 2 is ay view of the inner side of the clutch device. I` A L Fig. 3 is a section taken on line 3-3 of Fig-2.V j

Fig. 4 is a section taken on line 4.-'4 of Fig. 3 and showing the operating members in the neutralposition. j

Fig. 5 is a view similar toFig. 4 showing the operating members during rotation.

Fig. 6 is a perspective View of the operating device.

Fig. 7 is a perspective view of the locking member. j f` v As shownin Figs. 2 and 3, the devicec'omprises asheet metal casing 1 having a pe-` ripheral ange 2 about the outer edge.y This flange is provided with an arcuate depressed portion 3 and the iange is also provided withapertures 4 by which the device may be secured to anautomobile door frame. The

I'nember 1 iscup shapedin form 'andis prober 10. The shaft 7` isprovided with-an eX- -extendin'g into the spaces vbetween thelspring endsr12 and l3'and the ends l23 'and 24l 'of the PATENT i lofilill?" :i

vided with `an inverted cup shaped member 5 positionedtherein as shown in Fig. 3'..

Within the cylindrical wall of the housing i secured' to thev shaft 17 and is .provided'cwitli l two depending lugs 11, shownv more ,particularly in'Fig. 6; These lugs 11 extend :downwardly withinthe coiled spring 6, as shown in JvFig'. 4,V and the .coiledf spring `6 is provided with an inturnedv upper end 12 andan in# Vturnedlower end 13.Vi By this.arrangementl whenlthe shaft 7 and memberflO is turned in one direction'one lugll engages theend 12 of the Vspring thus contracting :the'spring and allowing the spring to 'turn inthe casing with the member 10 and shaftf7'. Upon rotation of theshaft and memberlO inthe oppositeV direction 'the otherV depending lug 11 engages thelower inturned endL 13 of the spring. Gand this turning movement of the' member 10 contractsthespring andfallows the spring to't'urn in thecasing with the memf tending stud 14. A gear Vl5 v'shown in Figs:

2 and 7 "is rotatablyl mounted on lthe' stud. 14v and is provided with 4a member 16 Asecured thereto asshown in Figs. 3 and 7 and thev memberl is provided with two depending lugs 17 shown fin' Figs.r3`, '4, 5 and 47. `TheA member 16 Vis providedl with two upturned lugs 18 which are pressed into notches-profvided therefor inthe gear land securegthe member 16jto thev said gear. i The member 16 Sand gear 15.are eachprovidedwith'an aperture for the stud `14 and are-positioned over the stud l14with` the depend-ing lugs17 flange 19.1011 the member 10.* The gear 15, as shown in Fig. 3,V meshes with the gear segment 2OV which isV adapted to'be turned tov turn'the window regulator; arm 21 to v,raise orlower the V.windowr4 `Thelflanhge 19.7 on the l j il) member 10 andthe lug 22extending from the opposite side of the member 1() extend over the edge of the spring- 6 and form a retainer to retain this spring in thecasing 1. vThe member 16 and gear 15 are positioned v over the stud 14 4vWith the lugs' 17 extending into the Vposition shown in Fig. 4. Upon rotation of the shaft 7 in a` counter clockwise direction the lug 11 of the member ,10 first engages th'e's'p'ringend 12 causing the spring to 'Contract and the end '23 'of the'fla'n'ge 19 engages one of the lugs 17 as shown in Fig.

thus turning the member 16 and gear 15' with the member and the shaft `7. Upon 15 rotationV of the shaft inthe opposite direction the opposite l,lugll of the member 10y engages the spring end 13 thus contracting the springand thefend 24 of the flange 19 engages the oppositevlug 17 and carries the member 16fandgearf'15. with. the memberrlO. Thus upon rotation of the shaft 7 in either direction the' member 16 and gear 15 are j picked up and rotated With the shaft thus turning the gear segment 120 .which meshes '2B with the gear 15 in raising or lowering the Window. Thev gear 15 and member 16 are free yto-rotate to a limited extent in relation to the Imember 1,0 by downward pressure'ap-z plied to the Window and through vthe, regula lator arm 21 tothe gear segment 20. Rotation ofy the gear-V15 ,by the gear segment 20, however, is prevented as Ithe rotation offthe 'gear' 15 in this manner in'one direction moves Y the lug 17 at the left of Figs'. y4V and 5,;in'to engagement -With the springend "12.rthus tending to expand the spring'into binding e engagement With theV inner wall ofthe casing 1 Qand preventing such rotation.. Rotation of 'the ugear-1 5 in L'the opposite direction'is prevented by the opposite lugv 17 engaging Y p the spring end 13 andtendingto expand the said spring into binding engagementfwith the 'casingwalh The parts are'so arranged, ,a'sWil-l" be' understood from Figs. 14 and 5,

ment with the'spring ends 12 or 13.` It Will I be noted (that Whenthegear 15 is rotated by the gear segment20 that-the greater the pres- Y sure applied to thevgear 2O the greater'presl`sure 'is appliedto -the, spring ends-12:' or '-13 y-thus'expanding the coiled spring with greatf, er pressureand causing it'to'bind moretightflyrin v'the casing to prevent rotation of the gears.' As willbenotedxfromFig. 3the end "ff-6s 14 f the 'shaft-17extendsfbyonathe-'flange' that vWhen the shaft '7L is rotated 'to contract 2 and-is rotatably mounted in an aperture provided therefor in the iframe, member to j3 andrides 'in 'contact yvithfth'e 'stationary member 5. Y

4AFrom the foregoing description it ybecomes evident that the device is very simple and efcient in operation, is composed of few parts and lsof consequent 10W fmanufacturing cost, will lock a Window Iat anypointto;

Which it is adjusted and provides ,a `'device which accomplishes the ob'ectsfdescribed. q

Having thus fully descri ed our invention, its utility and mode lof operation, What We claim and desire to secure bylLetters-Patent of the United States is Y '1. In a clutch device, a casing, ashaft 'rotatably mounted -inj they :casing a coiled spring positioned inthe casing and frictiomV ally engaging-the Wall-of the casing, thefends of the spring lbeing bent -rinvva rdl y,ea member secured 'to the shaft having a; pair of 4lugs extending between l `the j ends ofthe coiled spring, the arrangement being such thatfV rotation of the L said member fin onejf direction causes one of--thalugsfto engage :one end of Y thespring andc'ontractthe spring and rotaf tion -of the 4said 'member :in the opposite j lirection causes the otherv ,lug toen'gagefthe opposite end of the springend contractlthe spring, the said member beingfprovi'ded1` With 'a -lug between the "first two lugs extending over theeV spring and 4rretaining thefspring in the casing,fthe said memberybeing alsorprovided with a flange oppositethe said lug extending over the spring and retaining Vthe spring in the casing,a second memberrotatable in relation-to the irst memberv andfhaving f a pair of lugs extendinggwvithin =the spring'betiveen the ends of theflange*ofthe first member and the ends of the spring, the arrangement being` such that rotation of the second. member, in `relation-to the Vfirst fmember in one direction moves vone, `ofthe 'lugs and expands the spring,f'androtation off the second member in` the vopposite direction-l in relation to the first member moves the other lug into engagementfvvith the opposite-'end of the spring to expand the spring, rotation of the said first Imember Mineither. direction .causing one endof the flange to: engage one of vrthe lugs ofthe second member tocarry the secondmemberwith theifirst member,

Y,and-a gearsecured-to-thesecond-rmember. Y

2. Ina'clut'ch device, acasnghavling'an open end, ashaft rotatably mounted Vinthe casina isf-member Secured will? 'She-fte@ -into engagement Withfone endofthe spring having a pair of lugs extending into the casing from the open end, a second member rotatably mounted on the shaft and having a pair of lugs also extending into the casing from the open end, a coiled spring positioned' in the casing and frictionally vengaging the wall of the casing, the said spring having inturned ends extending between the lugs of the first and second members respectively, the first member being adapted to carry the second member therewith during rotation of the rst member, the arrangement being such that rotation. of the shaft `and the first member in either direction moves one of the lugs of the first member into engagement with one of the ends of the spring to contract the spring and rotation of the second memberin either direction in relation to the rst member moves one of the lugs of the second member into engagement with one -end of the spring to expand the spring into binding engagement with the wall of the casing, the first member being formed to retain the spring in the casing and a gear secured to the saidsecond member.

3. In a clutch device, a casing, a shaft rotatably mounted therein, a coiled springpo sitioned within the Vcasing for frictionally engaging the inner walls thereof, said spring having ends extending radially inward, a member secured to the shaft having a pair of lugs extending between the ends of the coiled spring, a second member rotatably mounted relative to the first member and in side by Y side relationship and having a pair of lugs extending upon opposite sides of the spring ends from that of the lugs of the first member, the lugs and spring being so arranged that rotation of the second member in either direction in relation to the first member causes the respective lug thereof to engage a spring end and expand the same to binding lengagement with the inner wall 0f the casing, a gear secured to the said second member, and means whereby rotation of the first member in either direction causes a lug to engage its spring and to contract the spring and thereby free the parts to rotation.

ing radially inward land positioned between lugs of the respective members, the relation-` ship of the said members, lugs and spring being such that rotation of the shaft and the attached first member contracts the spring freeing the same to rotation within the cascation.

EDWARD L. ACKERMAN. ALOIS J. ZWIERZINAK.

zeV

4. In a clutch device, a hollow cup-shaped i casing having an open end, an inverted cupshaped member positioned concentrioally therewithin less in length than the outer casing and spaced from the wall thereof, a shaft I y positioned, said spring having ends extend` 

